Question

An exhibition was conducted for 4 weeks. The number of tickets sold in 2nd workweek was increased by 20% and increased by 16% in the 3rd workweek but decreased by 20% in the 4th workweek. Find the number of tickets sold in the beginning, if 1392 tickets were sold in the last week ?
A) 1124
B) 1420
C) 1345
D) 1250

Answer 1

Hey mate ^_^

=======
Answer:
=======

Let initially 'x' ticket has been sold.

So,

In second week 20% increases.

So,

$= x \times \frac{120}{100}$

In third week 16% increases.

So,

$= x \times ( \frac{120}{100} ) \times ( \frac{116}{100} )$

In forth week 20% decrease.

So,

$x \times ( \frac{120}{100} ) \times ( \frac{116}{100} ) \times ( \frac{80}{100} ) = 1392$

$x = 1250$

Therefore,

Correct option D) 1250

#Be Brainly❤️

Answer 2

3

Q:

An exhibition was conducted for 4 weeks. The number of tickets sold in 2nd workweek was increased by 20% and increased by 16% in the 3rd workweek but decreased by 20% in the 4th workweek. Find the number of tickets sold in the beginning, if 1392 tickets were sold in the last week ?

A) 1124
B) 1420
C) 1345
D) 1250

Answer:   D) 1250 

Explanation:

Let initially 'X' ticket has been sold.

So now in 2nd week 20% increases, so
=> X x 120/100

In 3rd week 16% increases, so
=> X x (120/100) x (116/100)

In 4th week 20% decrease, so
=> X x (120/100) x (116/100) x (80/100) = 1392

X = 1250.